• 13704 Citations
  • 61 Scopus h-Index
1976 …2020

Research output per year

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Research Output

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Letter
2018

In reply

Hines, J., Bancos, I., Grebe, S. K. G. & Singh, R. J., Aug 1 2018, In : Clinical Chemistry. 64, 8, p. 1258-1259 2 p.

Research output: Contribution to journalLetter

2017

Negligible Thyroid Hormone Content Present in Nonprescription U.S. Weight Loss Products

Seger, C. D., He, X., Braverman, L. E., Yeh, M. W., Bernet, V. J., Singh, R. J., Rhee, C. M. & Leung, A. M., Feb 1 2017, In : Thyroid. 27, 2, p. 300-301 2 p.

Research output: Contribution to journalLetter

2 Scopus citations
2015

Mass spectrometric immunoassay raises doubt for the existence of parathyroid hormone fragment 7-84

Singh, R. J., Hines, J. M., Lopez, M. F., Krastins, B. & Hoofnagle, A. N., Mar 1 2015, In : Clinical chemistry. 61, 3, p. 558-560 3 p.

Research output: Contribution to journalLetter

5 Scopus citations

Response to the letter by Pauwels, et al

Hawkes, C. P., Schnellbacher, S., Singh, R. & Levine, M. A., Sep 1 2015, In : Journal of Clinical Endocrinology and Metabolism. 100, 9, p. L84-L85

Research output: Contribution to journalLetter

2012

Ionic cross talk can lead to overestimation of 3-methoxytyramine during quantification of metanephrines by mass spectrometry

Twentyman, J. M., Cradic, K. W., Singh, R. J. & Grebe, S. K., Jul 1 2012, In : Clinical chemistry. 58, 7, p. 1156-1158 3 p.

Research output: Contribution to journalLetter

11 Scopus citations
34 Scopus citations
2009

Author reply

Bakri, S. J., Reid, J. M., Snyder, M. R., Pulido, J. S. & Singh, R. J., Jan 1 2009, In : Ophthalmology. 116, 1, p. 169-170 2 p.

Research output: Contribution to journalLetter

2008

Are clinical laboratories prepared for accurate testing of 25-hydroxy vitamin D? [5]

Singh, R. J., Jan 1 2008, In : Clinical chemistry. 54, 1, p. 221-223 3 p.

Research output: Contribution to journalLetter

62 Scopus citations
2007

A liquid chromatography-mass spectrometry method for the quantification of urinary albumin using a novel 15N-isotopically labeled albumin internal standard [6]

Singh, R., Crow, F. W., Babic, N., Lutz, W. H., Lieske, J. C., Larson, T. S. & Kumar, R., Mar 1 2007, In : Clinical chemistry. 53, 3, p. 540-542 3 p.

Research output: Contribution to journalLetter

37 Scopus citations
2006

Letter to the editor [2]

Scammell, J. G., Westberry, J. M., Sadosky, P. W., Hubler, T. R., Williams, L. E., Gibson, S. V., Singh, R. J., Taylor, R. L. & Shackleton, C. H. L., Oct 1 2006, In : Comparative medicine. 56, 5, p. 393-394 2 p.

Research output: Contribution to journalLetter

2005

Persistent neutrophilia as a preceding symptom of pheochromocytoma (multiple letters)

Sevastos, N., Theodossiades, G., Malaktari, S., Archimandritis, A. J., Sawka, A. M., Kudva, Y. C., Singh, R. & Young, W. F., Apr 1 2005, In : Journal of Clinical Endocrinology and Metabolism. 90, 4, p. 2472-2473 2 p.

Research output: Contribution to journalLetter

4 Scopus citations

Precisely wrong? Urinary fractionated metanephrines and peer-based laboratory proficiency testing [2] (multiple letters)

Singh, R. J., Grebe, S. K., Yue, B., Rockwood, A. L., Cramer, J. C., Gombos, Z., Eisenhofer, G. & Binder, S., Feb 1 2005, In : Clinical chemistry. 51, 2, p. 472-474 3 p.

Research output: Contribution to journalLetter

16 Scopus citations